Cam sheave and support for brakes



2 Sheets-Sht 1 V \NILLQUGHBY CAM SHEAVE AND SUPPORT FOR BRAKES Filed Jan. 17

Sept 23 1924;

Sept. 23 1924.

V. WILLOUGHBY CAM SHEAVB AND SUPPORT FORBRAKES Filed Jan. 17, 1924 2 Sheets-Sheet 2 in enact the gusset plates and connected to the brake lever 9. As shown in Fig. 1, the chain 31 extends-direc ly from the lug 30 to the roller 32 when the brake is in the released'position, and upon the operation of the sheave to apply the brakes the chain 31 will be shifted by the lug 30 into engage ment, as'sliown in Fig. 3, with a drum 3% formed at the hub of the cam sheave, the chain belng wrapped about the drum as the brakes'are applied. It will be noted that While the cam sheave 20 is shifted from the position shown in Fig. l to the position shown .in Fig. 3 in applying, the brakes, the-ellective radius through which the chain 22 applies power to the cam sheave 20 gradually increases to a maximum, whereupon it remains constant and the effective radius through which the cam sheave 20 applies power to the chain 31 gradually decreases to a minimum whereupon it remainsconstaiit, a construction which provides maximum speed i in bringing the brake shoesinto contact with the Wheels and maximum power thereafter. In the modification shown. lil' Figs. 5 to 7, the invention is shown applied to a hopper'car havingan end sheet 50 and a slope floor sheet 51, the end sheet 50 being" connected by a Z-bar member 52 to the end sill 53; To the end sheet are secured brackets 54- which support a brake step 55 in which is mounted the usual brake mast 56. Secured to the step 55 by the bolts 57 is an inverted U-shaped member 58 having its Web.59 in engagement with the underside'of the step audits inner side (it) secured to the Z-bar member 52 by the rivets 61 Both the inner side GO'and the outer side 62 of the U-shaped member 58 provvided with openings to receivea pin (33 on which is mounted a cam sheave 64 of similar construction tothe cain sheave shown in Figs. 1 to a. ilXtenClUig across below the bottom edges of the sides and 62 'ofthe member 58 is a flanged plate 65 having its flanges secured to the bottom ends of the sides 60 and 62, and provided with an opening to receive the reduced lower end 66 of the brake mast 56. In this construction asin the construct-ion shown in Figs. 1 to 4, the brake mast is connected by a chain 67 which is wrapped about the semisecured thereto shaped mem provided with a lug 69 towliicii is secured What is claimed is:

1. In a car, a brake step, a power multiplying device operatively connected tothe brake lever, means connecting said power multiplying-device and saidbre step, a brake mast and a brakemast step carried by said connecting means.

2. In a car, a brake step, a member secured to said brake step, a power multiplyingdevice mounted in said member and operatively connected to the brake lever, a

brake mast operatively connected to said power multiplying device and a brake mast step fomiing a strut between said member and said brake mast.

3. In a car, a brake step, a power multiplying device operatively connected to the brake lever, a U-shaped member secured to said brake step and carrying said powermultiplying; device, a brake mast operatively connected to said power multiplying device shaped member.-

4. in a car, a brake step, an inverted U- shaped member secured to said step, a power multi ilving device 1 mounted in said U shaped member and operatively connected to the brake lever, a brake mast operatively connected to said power multiplying device and a brake mast step carried .by said 11- and a brake mast step-connecting the sides of said U-shaped member.

5. In a car, a brake step, a U-shaped member secured to said. brake step, a cam sheave mounted in said member operatively connected to the brake lever, a brakeiiiast operatively connected-to said cam shea e and a brake mast step connecting the sides of said U-shaped member and forming a strut between, said U'shaped member and said brake mast.

(5. In a car brake, a 'cam sheave operatively connected to the brake lever, a brake mast operatively connected to said cam sheave, a U-shaped member supporting said cam sheave and a brake mast step connecting the sides of said iJ-shaped member.

'4'. In a car brake, a power multiplying device operatively connected to the brake lover, a brake mast operatively connected to I said power multiplying device, an. inverted U-shaped member supporting said power .inultiplying device and means bracing said supporting means and supporting'said brake mast.

9. In a car-brake, a cam sheave operatively connected to the brake lever, a brake mast operatively connected to said sheave, an inverted U-shaped member supporting said sheave and means bracing said supporting member and supporting said brae mast adapted to serve as a strut between said supporting member and brake mast. 9. In a car brake, a cam sheave operatively connected to the brake lever, a brake mast o'per'zitively conneeted to the ca rn sheave, an inverted U-sliaped membersupportingsaid'sheave and a strut between said brake mast and U-shaped membersupport- 5 ing said brake mast. n

10. In a car brake, a cum sheave operatively UUiUIECtLd to the brake lever. a brake mast operaiively connected to bhe cam sheaveran"inverted U-shapcd member suppoi-ting said cam sheave and means support-' 10 ing said brake mastcarried by said .'U- shaped member. J

In Witness whereof I have hereunto set my hand in thepresenceyfi' two witnesses.-

- VICTOR \VILLOUGHBY.

\sitnesses -1 Hnnnm, R. W. SMITH. 

